US6113842A - Method of making blown films of cellulose - Google Patents

Method of making blown films of cellulose Download PDF

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Publication number
US6113842A
US6113842A US08/765,025 US76502597A US6113842A US 6113842 A US6113842 A US 6113842A US 76502597 A US76502597 A US 76502597A US 6113842 A US6113842 A US 6113842A
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US
United States
Prior art keywords
film
air gap
internal
cellulose
film tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/765,025
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English (en)
Inventor
Peter Weigel
Hans-Peters Fink
Konrad Frigge
Wolfgang Schwarz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANTEN FORSCHUNG E.V. reassignment FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANTEN FORSCHUNG E.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FINK, HANS-PETER, FRIGGE, KONRAD, SCHWARZ, WOLFGANG, WEIGEL, PETER
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/02—Cellulose; Modified cellulose

Definitions

  • the invention relates to a method for manufacturing oriented cellulose films by extruding a cellulose solution in a regenerating bath, to films manufactured according to the method, and their utilisation.
  • the method according to the invention is characterised in particular in that it is possible by varying the parameters of the method to produce variously-oriented blown films.
  • the draw ratio and blow-up ratio can be adjusted. In this respect the draw and blow-up ratios can be varied within a range from 1 to 10.
  • the films produced thereby then either have a unipolar-axial, a biaxial or a unipolar-biaxial orientation.
  • the cellulose films can also have a uniplanar-biaxial orientation, the (101)-interplanar group (Meyer/Misch nomenclature) to the film surface and the chain axes being present to a varying degree, preferably oriented in the film's direction of travel and transversely thereto.
  • the method according to the invention is further characterised in that an additional control of the mechanical properties is also possible by means of variation of the external air gap.
  • the external air gap can in this case be varied within a range of 1 to 5 mm.
  • the draw ratio is the ratio of the linear velocity of the tube being pulled through the precipitating bath and the linear velocity of the solution exiting the film-blower nozzle.
  • the blow up ratio is the ratio between the circumference or diameter of the performed tube at the film-blower nozzle and the circumference or diameter of the blown-up tube. Since the circumference and diameter are proportional to each other, thus the ratio is the same.
  • the method according to the invention is particularly characterised in that the mechanical properties of the blown films which can be produced can be altered both by varying the longitudinal and cross stretch in the air gap, and additionally by varying the length of the air gap.
  • the mechanical properties of the manufacturable films can be influenced in a controlled manner, both isotropic and anisotropic films, i.e. films can be produced with different parameters of mechanical properties in the transverse and in the longitudinal directions.
  • Another embodiment of the invention proposes that the film tube be inflated, not with air but with the regenerating bath liquor.
  • the invention in this design it is to be ensured that an internal air gap between the film-blower nozzle and the regenerating bath is also present inside the film tube.
  • This internal air gap may in this case be varied in a range between 0.1 and 50 mm. This enables further control of the coagulation process, as it is possible to set different lengths of air gap inside and outside the film tube.
  • the internal air gap is preferably set at 0.1 to 30 mm.
  • This method at the same time also prevents adhesion of the films when folded, which is easily possible when only air is introduced into the film tube.
  • the length of the air gap and the pressure required to set the cross stretch ratio can be regulated by means of the quantity of liquid introduced and the pressure in the air gap.
  • a further means of affecting the coagulation behaviour can be produced in that different regenerating baths (different concentrations of the NMMO, additives such as isopropanol, aminopropanol, urea, Caprolactam, among others) are used inside and outside the film tube.
  • Additives to regenerating baths are also disclosed in DD 201 703.
  • the invention also includes all these additives.
  • the method according to the invention as described above is preferably realised by means of a downwardly-directed annular nozzle as a film blower nozzle.
  • the annular nozzle may therefore have a diameter of 10 to 200 mm. It is further preferred that a non-derivated cellulose is used, dissolved in N-methyl-morpholin-N-oxide (NMMO).
  • NMMO N-methyl-morpholin-N-oxide
  • the invention further relates to the films produced by means of the method.
  • the films are particularly characterised in that they have a strength in the range of 100 to 600 Mpa.
  • the invention relates also to utilisation of the films described above, as biodegradable and combustible material with a wide field of application, e.g. s packaging material.
  • Example 2 As Example 1 with an external air gap 5 mm wide and an air gap inside the film tube 8 mm wide.
  • the resultant film has the following parameters:
  • Example 1 As Example 1 with a draft in the longitudinal direction of 1:5 and a blow-up ratio of 1:2.5.
  • the resultant film has the following parameters:
  • Elevation of the azimuthal reflex sharpness as a relative measure of orientation Elevation of the azimuthal reflex sharpness as a relative measure of orientation:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Artificial Filaments (AREA)
US08/765,025 1994-06-20 1995-06-19 Method of making blown films of cellulose Expired - Lifetime US6113842A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4421482A DE4421482C2 (de) 1994-06-20 1994-06-20 Verfahren zur Herstellung orientierter Cellulosefolien sowie die mit diesem Verfahren hergestellten Folien und deren Verwendung
DE4421482 1994-06-20
PCT/DE1995/000811 WO1995035340A1 (de) 1994-06-20 1995-06-19 Blasfolien aus cellulose

Publications (1)

Publication Number Publication Date
US6113842A true US6113842A (en) 2000-09-05

Family

ID=6521008

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/765,025 Expired - Lifetime US6113842A (en) 1994-06-20 1995-06-19 Method of making blown films of cellulose

Country Status (8)

Country Link
US (1) US6113842A (ja)
EP (1) EP0766709B1 (ja)
JP (1) JP3581899B2 (ja)
AT (1) ATE204889T1 (ja)
DE (2) DE4421482C2 (ja)
ES (1) ES2161897T3 (ja)
RU (1) RU2152961C1 (ja)
WO (1) WO1995035340A1 (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6517758B1 (en) 1998-06-04 2003-02-11 Lenzing Aktiengesellschaft Process for the production of cellulosic moulded bodies
US20040146668A1 (en) * 2002-10-17 2004-07-29 Herbert Gord Seamless tubular film, process and apparatus for producing a seamless tubular film
US6821591B2 (en) 2000-07-22 2004-11-23 Kalle Gmbh & Co. Kg Seamless tubular film and methods and devices for producing a seamless tubular film materials
US20090258227A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method of producing cellulose carbamate fibre and use of the same
US20090258561A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Cellulose carbamate spinning solution, method for producing a cellulose carbamate nonwoven, and use of the same
US20090259032A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method of producing cellulose carbamate blown film and use of the same
US9701800B2 (en) 2013-04-10 2017-07-11 Lenzing Aktiengesellschaft Polysaccharide film and method for the production thereof
US10030323B2 (en) 2013-04-05 2018-07-24 Lenzing Aktiengesellschaft Method for the production of polysaccharide fibers with an increased fibrillation tendency
US10196758B2 (en) 2013-06-18 2019-02-05 Lenzing Aktiengesellschaft Polysaccharide fibers and method for producing same
US10221502B2 (en) 2013-04-05 2019-03-05 Lenzing Aktiengesellschaft Polysaccharide fibers and method for the production thereof
US10220111B2 (en) 2013-06-17 2019-03-05 Lenzing Aktiengesellschaft Highly absorbent polysaccharide fiber and use thereof

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515137A1 (de) * 1995-04-25 1996-10-31 Thueringisches Inst Textil Verfahren zur Herstellung von Cellulose-Flachfolien
US5658525A (en) * 1995-08-04 1997-08-19 Viskase Corporation Cellulose food casing manufacturing method
US6177158B1 (en) 1995-12-06 2001-01-23 Teepak Investments, Inc. Stretched tubular film for holding foodstuff
GB9600006D0 (en) * 1996-01-02 1996-03-06 Courtaulds Fibres Holdings Ltd Polymeric films
DE19607953A1 (de) * 1996-03-01 1997-09-04 Kalle Nalo Gmbh Nach dem Aminoxidverfahren hergestellte Nahrungsmittelhüllen auf Cellulosebasis
DE19633405A1 (de) * 1996-08-19 1998-02-26 Fraunhofer Ges Forschung Verfahren zur Herstellung von Celluloseformkörpern und die mit diesem Verfahren hergestellten Formkörper sowie deren Verwendung
US6221487B1 (en) 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties
US6235392B1 (en) 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US5989605A (en) 1996-10-31 1999-11-23 Teepak Investments, Inc. Sausage product and method for making
AT404595B (de) * 1997-03-21 1998-12-28 Chemiefaser Lenzing Ag Vorrichtung und verfahren zur herstellung cellulosischer schlauchfolien
US5766540A (en) * 1997-03-27 1998-06-16 Viskase Corporation Cellulose food casing manufacturing method
AT404731B (de) 1997-04-25 1999-02-25 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer flachfolien und ihre verwendung
CN1142967C (zh) * 1997-04-25 2004-03-24 连津格股份公司 制造纤维素型件的方法
US6165401A (en) * 1997-04-25 2000-12-26 Lenzing Aktiengesellschaft Process for the production of cellulosic moulded bodies
US5942167A (en) * 1997-08-12 1999-08-24 Viskase Corporation Method of making a cellulose food casing including solvent recovery
DE19737113A1 (de) * 1997-08-27 1999-03-04 Kalle Nalo Gmbh Verfahren und Vorrichtung zur Herstellung eines nahtlosen Folienschlauches auf Cellulosebasis durch Extrudieren
WO2000023249A2 (en) * 1998-10-21 2000-04-27 Devro Plc Cellulose extrusion
GB9823086D0 (en) * 1998-10-21 1998-12-16 Devro Plc Film manufacturing method
AT406958B (de) * 1998-10-22 2000-11-27 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer flachfolien
DE19961843A1 (de) 1999-12-21 2001-07-05 Fraunhofer Ges Forschung Schlauchfolien aus Cellulose-Protein-Blends
GB0006524D0 (en) * 2000-03-18 2000-05-10 Devro Plc Film manufacturing method
DE10054591A1 (de) * 2000-11-03 2002-06-06 Geesthacht Gkss Forschung Vorrichtung zur Herstellung einer Polymermembran
RU2504561C2 (ru) * 2011-03-22 2014-01-20 Учреждение Российской академии наук Институт высокомолекулярных соединений РАН Способ получения пористого пленочного материала

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US4416698A (en) * 1977-07-26 1983-11-22 Akzona Incorporated Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article
EP0494851A2 (de) * 1991-01-09 1992-07-15 Lenzing Aktiengesellschaft Verfahren zur Herstellung eines cellulosischen Formkörpers
WO1993013670A1 (en) * 1992-01-17 1993-07-22 Viskase Corporation Cellulose food casing, method and apparatus
WO1993019230A1 (de) * 1992-03-17 1993-09-30 Lenzing Aktiengesellschaft Verfahren zur herstellung cellulosischer formkörper sowie vorrichtung zur durchführung des verfahrens
EP0574870A1 (de) * 1992-06-16 1993-12-22 THÜRINGISCHES INSTITUT FÜR TEXTIL- UND KUNSTSTOFF-FORSCHUNG e.V. Verfahren zur Herstellung von Cellulose-Formkörpern
WO1995007811A1 (de) * 1993-09-13 1995-03-23 Lenzing Aktiengesellschaft Vorrichtung und vefahren zur herstellung cellulosischer folien
US5451364A (en) * 1992-01-17 1995-09-19 Viskase Corporation Cellulose food casing manufacturing method

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US4416698A (en) * 1977-07-26 1983-11-22 Akzona Incorporated Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article
EP0494851A2 (de) * 1991-01-09 1992-07-15 Lenzing Aktiengesellschaft Verfahren zur Herstellung eines cellulosischen Formkörpers
WO1993013670A1 (en) * 1992-01-17 1993-07-22 Viskase Corporation Cellulose food casing, method and apparatus
US5451364A (en) * 1992-01-17 1995-09-19 Viskase Corporation Cellulose food casing manufacturing method
WO1993019230A1 (de) * 1992-03-17 1993-09-30 Lenzing Aktiengesellschaft Verfahren zur herstellung cellulosischer formkörper sowie vorrichtung zur durchführung des verfahrens
EP0574870A1 (de) * 1992-06-16 1993-12-22 THÜRINGISCHES INSTITUT FÜR TEXTIL- UND KUNSTSTOFF-FORSCHUNG e.V. Verfahren zur Herstellung von Cellulose-Formkörpern
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6517758B1 (en) 1998-06-04 2003-02-11 Lenzing Aktiengesellschaft Process for the production of cellulosic moulded bodies
US6821591B2 (en) 2000-07-22 2004-11-23 Kalle Gmbh & Co. Kg Seamless tubular film and methods and devices for producing a seamless tubular film materials
US20040146668A1 (en) * 2002-10-17 2004-07-29 Herbert Gord Seamless tubular film, process and apparatus for producing a seamless tubular film
US8263507B2 (en) 2008-04-14 2012-09-11 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung, E.V. Cellulose carbamate spinning solution, method for producing a cellulose carbamate nonwoven, and use of the same
US20090258561A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Cellulose carbamate spinning solution, method for producing a cellulose carbamate nonwoven, and use of the same
US20090259032A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method of producing cellulose carbamate blown film and use of the same
US20090258227A1 (en) * 2008-04-14 2009-10-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method of producing cellulose carbamate fibre and use of the same
US8454884B2 (en) 2008-04-14 2013-06-04 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method of producing cellulose carbamate blown film and use of the same
US10030323B2 (en) 2013-04-05 2018-07-24 Lenzing Aktiengesellschaft Method for the production of polysaccharide fibers with an increased fibrillation tendency
US10221502B2 (en) 2013-04-05 2019-03-05 Lenzing Aktiengesellschaft Polysaccharide fibers and method for the production thereof
US9701800B2 (en) 2013-04-10 2017-07-11 Lenzing Aktiengesellschaft Polysaccharide film and method for the production thereof
US10220111B2 (en) 2013-06-17 2019-03-05 Lenzing Aktiengesellschaft Highly absorbent polysaccharide fiber and use thereof
US10196758B2 (en) 2013-06-18 2019-02-05 Lenzing Aktiengesellschaft Polysaccharide fibers and method for producing same

Also Published As

Publication number Publication date
DE59509565D1 (de) 2001-10-04
JPH10501570A (ja) 1998-02-10
RU2152961C1 (ru) 2000-07-20
EP0766709A1 (de) 1997-04-09
DE4421482C2 (de) 1997-04-03
EP0766709B1 (de) 2001-08-29
ATE204889T1 (de) 2001-09-15
DE4421482A1 (de) 1995-12-21
WO1995035340A1 (de) 1995-12-28
JP3581899B2 (ja) 2004-10-27
ES2161897T3 (es) 2001-12-16

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